| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
We aim a solar-pumped laser without concentrating the sunlight. A Nd-doped glass fiber is packed in a box whose front window is dichroic, and it contains sensitizer dye solution. By irradiating a white light equivalent to a 20 times concentrated solar light, a 43dB/km of positive gain is observed. Expected gain by the natural sunlight is 2.2dB/km, and it is below the intrinsic loss of the fiber. The unexpected low gain is due to the low reflectivity of the sidewall of the box, and pump wavelength absorption of the dye solution.
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